Simulator Study of a Vertical Axis Wind Turbine Generator Connected to a Small Hydro Network

Lefebvre,; Dessaint,; Dubé,; Nakra,; Perocheau,

doi:10.1109/mper.1985.5526574

Cited by 1 publication

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“…This can be tuned to minimize power fluctuations and drivetrain vibrations. (For instance, this is shown in the work of Lefebvre et al 54 and Dessaint et al, 55 as well as the recent study by Svendsen and Merz. 53 ) Small adjustments in the speed can be used to compensate for degraded aerodynamics when the blades are soiled or eroded; constant-speed turbines can see large reductions in maximum power output.…”

Section: Power/speed Operating Schedulementioning

confidence: 63%

Rapid optimization of stall-regulated wind turbine blades using a frequency-domain method: Part 2, cost function selection and results

Merz

2014

Wind Energ.

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A fast and effective frequency‐domain optimization method was developed for stall‐regulated blades. It was found that when using linearized dynamics, typical cost functions employing damage‐equivalent root bending moments are not suitable for stall‐regulated wind turbines: when the cost function is minimized, the edgewise damping can be low, and the flapwise damping can approach zero during an extreme operating gust. A new cost function is proposed that leads to nicely balanced stall behavior and damping over the entire operating windspeed range. The method was used to design the blades of two multi‐MW, stall‐regulated, offshore wind turbines, comparable with the NREL 5 MW and NTNU 10 MW pitch‐regulated turbines. It is shown that the optimal stall‐regulated blade has a unique aerodynamic profile that gives high flapwise and edgewise damping and a uniform mean power output above the rated windspeed. The blades are described in sufficient detail that they can be used in further aeroelastic analyses, to compare large stall‐regulated and pitch‐regulated turbines. Copyright © 2014 John Wiley & Sons, Ltd.

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Section: Power/speed Operating Schedulementioning

confidence: 63%

Rapid optimization of stall-regulated wind turbine blades using a frequency-domain method: Part 2, cost function selection and results

Merz

2014

Wind Energ.

View full text Add to dashboard Cite

show abstract

Simulator Study of a Vertical Axis Wind Turbine Generator Connected to a Small Hydro Network

Cited by 1 publication

References 0 publications

Rapid optimization of stall-regulated wind turbine blades using a frequency-domain method: Part 2, cost function selection and results

Rapid optimization of stall-regulated wind turbine blades using a frequency-domain method: Part 2, cost function selection and results

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